Dyneema® NM22 spun HPPE yarn offers significantly improved cut resistance and comfort for protective clothing applications.
Janet Bealer Rodie, Assistant Editor
SM Dyneema BV, The Netherlands, recently introduced NM22, a 100-percent Dyneema®
high-performance polyethylene (HPPE) spun yarn for use in protective gloves and apparel components.
According to Cyril Veillat, sales manager, NM22 was developed especially for the US market and is
the only 100-percent spun HPPE yarn available.
DSM originally developed and patented Dyneema fiber and its gel spinning process in 1979. Touted as the strongest fiber available — it is 15 times stronger than steel — Dyneema is perhaps better known in the United States under the trade name Spectra®, offered under DSM license by Honeywell, Colonial Heights, Va. DSM has continued to develop new, exclusive Dyneema products and now has entered the US market itself, establishing DSM Dyneema LLC in mid-2003, with sales and marketing operations based in Stanley, N.C., and a manufacturing plant located in Greenville, N.C.
DSM Dyneema developed Dyneema® NM22 spun yarn especially for the US market for use in knitted and woven protective clothing.
Dyneema NM22, equivalent to a 400-denier fiber, is spun from DSM’s second-generation long-staple Dyneema SK75 fiber. SK75 offers enhanced properties including greater strength and higher specific modulus than the original SK60/65 grades.
Compared with aramids, which also are used in protective apparel applications, Dyneema is 40
percent stronger based on weight; and offers comparable cut resistance, greater durability with
regard to abrasion and chemical resistance, and superior breathability and softness. And NM22
surpasses Dyneema filament on such performance counts as cut resistance and comfort, Veillat said.
“The cut resistance of the spun yarn is between 20 percent and 40 percent higher than that of continuous filament HPPE yarns on the same weight basis, according to the ASTM test,” he explained. “Moreover, gloves made with the spun yarn also are much more comfortable than gloves made with filament, which makes them easier to wear.”
NM22 can be knitted into gloves or woven into fabrics for apparel components such as sleeves and aprons for workwear. The end-products are used in industries such as automotive, paper and glass. Another application is protective sporting apparel such as fencing suits.
Veillat said five or six US companies already are using NM22 in their products. Some are adding other fibers — including Lycra®, nylon, polyester and wool — to provide additional properties, depending on the intended end-use. NM22 itself is colorless, but it can be combined with dyeable or dyed fibers to add color.
DSM also is developing a Dyneema NM44 spun yarn that is equivalent to a 200-denier yarn. Veillat said that in trials, NM44 is performing very well, both by itself and in composite yarns.
For more information about Dyneema® NM22, contact Cyril Veillat 31 455436813; email@example.com; or Richard Miller (800) 883-7404; firstname.lastname@example.org.